We have some unfilterable interference right on 125.0 at our Chicago megafeed site so we've finally had to lock out 125.0. This creates a hole in the Chicago Departure coverage, especially overnight on the mid shift.

If anyone is within range of O'Hare (5-12 miles +/-) and think they can help, please contact me.

Chananya contacted me via PM, since he saw that I live near KORD, and asked about my reception of 125.0. I have a Sony Wavehawk with a Diamond RH77CA whip. I can pickup both sides with no problem, but I also have the constant carrier with a squealing noise.

Chananya contacted me via PM, since is saw I live near KORD, and asked about my reception of 125.0. I have a Sony Wavehawk with a Diamond RH77CA whip. I can pickup both sides with no problem, but I also have the constant carrier with a squealing noise.

It's a very important frequency - but we have yet to find a location around Chicago that doesn't have interference on that frequency. 125.0 is a very bad frequency, primarily due to cable TV leakage interference and possibly other things. Very hard to filter out.

Unless they start having issue communicating with aircraft they won't be thinking about it. The FAA only cares about operational issues - this is not an operational issue. It's just an annoyance to those of us who would like to listen.